Radio Button UserData Propety

[Zach-612]

The easiest way I've found to get an identifier for the active radio button in a specific toggle group is by getting its userData.

ToggleGroup.getSelectedToggle().getUserData().toString()

But there doesn't seem to be any way to add a userData property through SceneBuilder. I end up going through the .fxml file and adding it to each radio button line manually. It would be nice to have a "User Data" field in the radio button properties menu.

[Oliver-Loeffler]

This sounds like a really good idea. This is worth to be explored as it would add some useful functionality and comfort to Scene Builder.